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amazonAmazonALAS2-2019-1220
HistoryMay 29, 2019 - 7:14 p.m.

Medium: libxml2

2019-05-2919:14:00
alas.aws.amazon.com
46

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

8.1

Confidence

Low

EPSS

0.025

Percentile

90.1%

Issue Overview:

A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to leak potentially sensitive information.(CVE-2015-8242)

A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to crash.(CVE-2015-7500)

A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to leak potentially sensitive information.(CVE-2015-8317)

A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to crash.(CVE-2015-7497)

A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to crash.(CVE-2015-7498)

A denial of service flaw was found in the way the libxml2 library parsed certain XML files. An attacker could provide a specially crafted XML file that, when parsed by an application using libxml2, could cause that application to use an excessive amount of memory.(CVE-2015-1819)

A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to crash.(CVE-2015-7941)

A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to leak potentially sensitive information.(CVE-2015-7499)

A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to leak potentially sensitive information.(CVE-2015-8241)

A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to use an excessive amount of CPU.(CVE-2015-5312)

A heap-based buffer overflow flaw was found in the way libxml2 parsed certain crafted XML input. A remote attacker could provide a specially crafted XML file that, when opened in an application linked against libxml2, would cause the application to crash causing a denial of service.(CVE-2015-7942)

It was discovered that libxml2 could access out-of-bounds memory when parsing unclosed HTML comments. A remote attacker could provide a specially crafted XML file that, when processed by an application linked against libxml2, could cause the application to disclose heap memory contents.(CVE-2015-8710)

Affected Packages:

libxml2

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update libxml2 to update your system.

New Packages:

aarch64:  
    libxml2-2.9.1-6.amzn2.3.2.aarch64  
    libxml2-devel-2.9.1-6.amzn2.3.2.aarch64  
    libxml2-static-2.9.1-6.amzn2.3.2.aarch64  
    libxml2-python-2.9.1-6.amzn2.3.2.aarch64  
    libxml2-debuginfo-2.9.1-6.amzn2.3.2.aarch64  
  
i686:  
    libxml2-2.9.1-6.amzn2.3.2.i686  
    libxml2-devel-2.9.1-6.amzn2.3.2.i686  
    libxml2-static-2.9.1-6.amzn2.3.2.i686  
    libxml2-python-2.9.1-6.amzn2.3.2.i686  
    libxml2-debuginfo-2.9.1-6.amzn2.3.2.i686  
  
src:  
    libxml2-2.9.1-6.amzn2.3.2.src  
  
x86_64:  
    libxml2-2.9.1-6.amzn2.3.2.x86_64  
    libxml2-devel-2.9.1-6.amzn2.3.2.x86_64  
    libxml2-static-2.9.1-6.amzn2.3.2.x86_64  
    libxml2-python-2.9.1-6.amzn2.3.2.x86_64  
    libxml2-debuginfo-2.9.1-6.amzn2.3.2.x86_64  

Additional References

Red Hat: CVE-2015-1819, CVE-2015-5312, CVE-2015-7497, CVE-2015-7498, CVE-2015-7499, CVE-2015-7500, CVE-2015-7941, CVE-2015-7942, CVE-2015-8241, CVE-2015-8242, CVE-2015-8317, CVE-2015-8710

Mitre: CVE-2015-1819, CVE-2015-5312, CVE-2015-7497, CVE-2015-7498, CVE-2015-7499, CVE-2015-7500, CVE-2015-7941, CVE-2015-7942, CVE-2015-8241, CVE-2015-8242, CVE-2015-8317, CVE-2015-8710

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

8.1

Confidence

Low

EPSS

0.025

Percentile

90.1%